Molten Metal Systems


Suprex® crucibles are carbon-bonded silicon carbide crucibles, which are characterised by excellent thermal conductivity and high chemical erosion resistance. Based on application and furnace type respective types of Suprex® are available.


Suprex® B: Recommended for copper and copper alloys in fuel fired furnaces.

Suprex® R: Recommended for aluminium/aluminium alloys melting and zinc oxide producing in fuel fired furnaces.

Suprex® E: Recommended for aluminium/aluminium alloys and zinc melting and holding in electric resistance furnaces.

Suprex® Typical Metal Casting Temperature 

Suprex® B 800°C - 1400°C (1472°F - 2550°F).

Suprex® R 700°C - 1000°C (1292°F - 1830°F). 

Suprex® E 450°C - 900°C (842°F - 1652°F). 

Suprex® E - Plus 450°C - 900°C (842°F - 1652°F).

Performance Characteristics

  • Fast melting speed through high consistent thermal conductivity.
  • Excellent thermal shock resistance.
  • High resistance to oxidation.
  • Good erosion resistance.
  • Good resistance to corrosive attack by chemical treatment agents.


Suprex® B crucibles are finished with a brown coloured coating.

Suprex® R crucibles are finished with a red coloured coating.

Suprex® E crucibles are finished with a grey coloured coating.

Suprex® E-Plus crucibles are finished with a grey coloured coating.

Pattern Range

Suprex® crucibles are available in a comprehensive range of shapes and sizes to suit most end user requirements.

For available sizes and shapes click here.


Excel and Himelt crucibles are manufactured from premium grade raw materials under an ISO 9001:2015 quality management system.